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A person goes to office by car or scooter or bus or train, probability of which are 1/7, 3/7, 2/7 and 1/7 respectively. Probability that he reaches office late, if he takes car, scooter bus or train is 2/9, 1/9, 4/9 and 1/9 respectively. Given that he reached office in time, the probability that he travelled by a car is

A

`1//7`

B

`2//7`

C

`3//7`

D

`4//7`

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A person goes to office either by car, scooter, bus or train probability of which being 1/7, 3/7, 2/7 and 1/7 respectively. Probability that he reaches office late, if he takes car, scooter, bus or train is 2/9, 1/9, 4/9 and 1/9 respectively. Given that he reached office in time, then what is the probability that he travelled by a car?

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2015-MULTIPLE CHOICE QUESTIONS
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  15. Which of the following is /are always false?

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  16. If the straight (a-1)x-by+4=0 is normal to the hyperbola xy=1 then whi...

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  17. Let f be any-continuously differentiable function on [a,b] and twice d...

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  18. A relation rho on the set of real number R is defined as follows : xrh...

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  19. Suppose a machine produces metal parts that contain some defective par...

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